#ifndef GATS_INTEGER_H
#define GATS_INTEGER_H

#include "gats/object.h"

#include <stdint.h>

#include <bu/stream.h>

namespace Gats
{
	class Integer : public Gats::Object
	{
	public:
		Integer();
		Integer( int64_t iVal );
		virtual ~Integer();

		virtual Type getType() const { return typeInteger; }
		int64_t getValue() const { return iVal; }

		virtual void write( Bu::Stream &rOut ) const;
		virtual void read( Bu::Stream &rIn, char cType );

		template<typename itype>
		static void readPackedInt( Bu::Stream &rStream, itype &rOut )
		{
			int8_t b;
			rOut = 0;
			bool bNeg;

			rStream.read( &b, 1 );
			bNeg = ( b&0x40 );
			rOut |= (itype(b&0x3F));
			int c = 0;
			while( (b&0x80) )
			{
				rStream.read( &b, 1 );
				rOut |= (itype(b&0x7F)) << (6+7*(c++));
			}
			if( bNeg ) rOut = -rOut;
		}

		template<typename itype>
		static void writePackedInt( Bu::Stream &rStream, itype iIn )
		{
			uint8_t b;

			if( iIn < 0 )
			{
				iIn = -iIn;
				b = (iIn&0x3F);
				if( iIn > b )
					b |= 0x80 | 0x40;
				else
					b |= 0x40;
			}
			else
			{
				b = (iIn&0x3F);
				if( iIn > b )
					b |= 0x80;
			}
			rStream.write( &b, 1 );
			iIn = iIn >> 6;

			while( iIn )
			{
				b = (iIn&0x7F);
				if( iIn > b )
					b |= 0x80;
				rStream.write( &b, 1 );
				iIn = iIn >> 7;
			}
		}

	private:
		int64_t iVal;
	};
};

Bu::Formatter &operator<<( Bu::Formatter &f, const Gats::Integer &i );

#endif